发明授权
US5310499A Oxazolidinone derivatives, and the use thereof as dopes in
liquid-crystal mixtures
失效
恶唑烷酮衍生物及其作为液晶混合物中的掺杂物的用途
- 专利标题： Oxazolidinone derivatives, and the use thereof as dopes in liquid-crystal mixtures
- 专利标题（中）： 恶唑烷酮衍生物及其作为液晶混合物中的掺杂物的用途
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申请号： US732626申请日： 1991-07-19
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公开(公告)号： US5310499A公开(公告)日： 1994-05-10
- 发明人: Gunter Scherowsky , Michael Sefkow , Gerd Illian , Rainer Wingen
- 申请人： Gunter Scherowsky , Michael Sefkow , Gerd Illian , Rainer Wingen
- 申请人地址： DEX Frankfurt am Main
- 专利权人： Hoechst Aktiengesellschaft
- 当前专利权人： Hoechst Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt am Main
- 优先权： DEX4023216 19900721; DEX4023493 19900724
- 主分类号： C07D263/20
- IPC分类号： C07D263/20 ; C07D263/22 ; C07D263/24 ; C07D263/26 ; C07D413/06 ; C07D413/08 ; C07D413/10 ; C07D413/12 ; C07D413/14 ; C07D417/06 ; C07D417/08 ; C07D417/10 ; C07D417/12 ; C07D417/14 ; C09K19/34 ; C09K19/58 ; G02F1/13 ; C07D239/02 ; C07P263/04
摘要：
Chiral oxazolidinones of the formula (I) or (II) ##STR1## in which R.sup.1 is, for example, a straight-chain or branched alkyl radical having 1 to 16 carbon atoms orR.sup.2 and R.sup.3 are, for example, --H, --CH.sub.3 or phenyl,j, 1 and n are zero, 1 or 2,k and m are zero or 1,A.sup.1, A.sup.2 and A.sup.3 are, for example, phenyl or cyclohexyl,M.sup.1 and M.sup.2 are, for example, COO or CH.sub.2 O, andX is, for example, CH.sub.2 or COO,are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short response times. A further advantage is that the oxazolidinones induce a helix of very low pitch, so that they are also suitable for helix compensation in LC mixtures.
公开/授权文献
- US5743084A Method for monitoring the performance of a no.sub.x trap 公开/授权日：1998-04-28
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